Mechanical Metallurgy MCQ Questions and Answers

21

Which one of the following metal forming processes is the earing defect associated with?

A) Deep drawing B) Rolling C) Forging D) Wire drawing

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Answer & Solution

Answer: Option A

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22

From a 2 m × 1.2m sheet, squares are Cut out from each of the four comers as shown in the figure and then the sides are bent to form an open box. The maximum possible volume (in m³) of the box is
Mechanical Metallurgy mcq question image

Mechanical Metallurgy mcq question image

A) 0.14 B) 0.26 C) 0.54 D) 0.82

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Answer & Solution

Answer: Option B

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23

Match the following products to their method of manufacture.

P. Seamless tubes	1. Deep drawing
Q. Aluminium toothpaste tubes	2. Stamping
R. Currency coins	3. Impact extrusion
S. Car bodies	4. Roll piercing or extrusion

A) P-4, Q-3, R-2, S-1 B) P-4, Q-3, R-1, S-2 C) P-3, Q-4, R-1, S-2 D) P-2, Q-3, R-1, S-4

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Answer & Solution

Answer: Option A

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24

For ideal defect free deep drawability of material, it should have

A) low plastic anisotropy and low planer anisotropy B) low plastic anisotropy and high planer anisotropy C) high plastic anisotropy and low planer anisotropy D) high plastic anisotropy and high planer anisotropy

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Answer & Solution

Answer: Option D

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25

Match the mechanical behaviour in Group 1 with the terms in Group 2.

Group 1	Group 2
P. Low cycle fatigue	1. Charpy test
Q. Creep	2. Portevin-LeChatelier effect
R. Impact toughness	3. Coffin-Manson equation
S. Stretcher strains	4. Larson-Miller parameter
	5. Jominy test

A) P-2, Q-4, R-1, S-5 B) P-2, Q-1, R-5, S-3 C) P-3, Q-4, R-1, S-2 D) P-2, Q-1, R-4, S-5

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Answer & Solution

Answer: Option C

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26

A wedge shaped piece of copper is plastically deformed to a plate of uniform thickness. The finest recrystallised grains will be observed at

A) the end of the plate corresponding to the thinner part of the wedge B) the end of the plate corresponding to the thicker part of the wedge C) in the centre of the plate D) at no particular location of the plate

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Answer & Solution

Answer: Option B

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27

In sheet metal forming, stretcher strains occur in

A) duralumin sheets B) low carbon steel sheets C) austenitic stainless steel sheet D) Ni-base alloy sheet

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Answer & Solution

Answer: Option A

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28

Which of the following is a typical rolling defect?

A) Buckling B) Edge cracking C) Cold shut D) Porosity

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Answer & Solution

Answer: Option B

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29

Earing is a defect found in steels after the following metal working operation (s)?

A) Deep drawing B) Rolling C) Extrusion D) Wire drawing

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Answer & Solution

Answer: Option A

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30

Identify the correct metal forming operations in Group 1 with the product in Group 2.

Group 1	Group 2
P. Drawing	1. Tailoring needles
Q. Cold forging	2. Beverage cans
R. Extrusion	3. Radiator caps
S. Swaging	4. Steel half domes

A) P-1, Q-4, R-2, S-3 B) P-1, Q-2, R-3, S-4 C) P-2, Q-3, R-4, S-1 D) P-1, Q-3, R-2, S-4

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Answer & Solution

Answer: Option B

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Mechanical Metallurgy MCQ Questions and Answers | Metallurgical Engineering